I’m interested in making a three-wheel stack with a frame that is similar in
design to the Schwinn flat blade frame. Can someone familiar with
metalworking techniques suggest how one might accomplish this?
Particularly, how do you bend the metal where the frame attaches to the seat
post?
Also, since a section of flat steel long enough for a three wheel stack
would be quite heavy I wonder if there would be another lighter, yet
suitably strong material?
My current three-wheel stack is based on a Schwinn 20" in a 24" frame with
bolt on extenders. It works fine but is VERY heavy. The multiwheel setups
that I’ve seen before seem to use main-cap style frame extenders where
instead of a cap you have a frame “leg” with another bearing holder on the
end. This seems like it might be the weak point. Also it greatly increases
the cost of a multiwheeler since all wheels need to be unicycle wheels.
With my setup the bottom two wheels are regular bicycle wheels that only
cost me about $30US each.
I’m also interested in opinions about whether Steve Howard’s three piece
frame design would work well for a multiwheel. Obviously the fork blades
would need to be extended, but I’m interested to know if it would even be a
viable option. Does SH sell these things or do I need to change my name to
Harper to gain access?
-mg